When you have spent hours crafting the “perfect” CV, you want to make sure your cover letter introduces you with the same level of professionalism. A cover letter is not a repeat of the information contained in your CV.
Job hunting is hard work, for both you and employers. If you are a job seeker trying to find the perfect position to enhance your career, you are probably finding that you are in a sea of competition who are all racing towards the top, and that is exhausting.